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* The F-5E, developed in 1970, has 10,000 Ibs. of thrust, allowing it to fly at 1.6 times the speed of sound. Taiwan co-produces some of the planes under license from the Northrop Corp. The F-5G, just developed by Northrop, has 16,000 Ibs. of thrust and can fly at 2.1 times the speed of sound. The F-5G, unlike its predecessor, can carry radar-guided missiles.